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RE: Pressure treatment of wood

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It is important to understand how it is to be used. The AWPA U1 Standard covers a variety of Use Classes (UCx). Some, e.g., UC2, allow a material like Strandguard, which is intended for sheltered locations like a damp sill plate to such classes as the UC5x series which allow use in brackish or salt water and adjacent to the mud line, for which Strandguard will not be appropriate.
Bill Cain, S.E.
Berkeley, CA

Date: Mon, 8 Dec 2008 11:58:35 -0800
From: d.topete73(--nospam--at)
To: seaint(--nospam--at)
Subject: Re: Pressure treatment of wood

Well, i remember when i built my backyard deck applying a treatment by JASCO(?) which was intended to provide a similar effect on the PT wood.  

The other option is to specify Strandguard (or equiv) which is a PT manufactured LSL by TrusJoist/iLevel/Weyerhauser, intended for sill plate usage.  Good Luck.

On Mon, Dec 8, 2008 at 10:46 AM, <erik_g(--nospam--at)> wrote:
Does anyone have any information about the pressure treatment of wood.

Per the CBC 2304.11 I specified that the wood must be "naturally durable or preservative treated I.A.W. AWPA U1 standards. Well the contractor bought some paint that is intended to be put on the end of wood members that are already treated, once it is cut.

So can wood actually be treated in the field?

Erik Gibbs
Structures Inc
Laguna Beach, Ca

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